﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.Web.UI.WebControls;

/// <summary>
/// Summary description for MyDropDownList
/// </summary>
public class MyDropDownList
{
    public MyDropDownList()
    {
        //
        // TODO: Add constructor logic here
        //
    }

    public Boolean kiemtraRong(DropDownList dropDownList)
    {
        if (dropDownList.Text == string.Empty)
        {
            return true;
        }

        return false;
    }
}